How to Avoid Salmonella in Eggs | Safety Steps That Work

Avoid Salmonella in eggs by buying refrigerated eggs, keeping them at 40°F or colder, discarding cracked ones.

That perfect sunny-side-up egg with its runny golden yolk looks beautiful on a plate, but it also happens to be one of the riskier ways to eat eggs. Salmonella enteritidis can live inside an egg that looks completely normal, and no amount of careful cracking or farm-fresh sourcing changes that simple biological fact.

The good news is that avoiding Salmonella doesn’t require giving up eggs entirely. It comes down to a handful of specific kitchen habits that are easy to build into your routine: proper refrigeration, checking for cracks, thorough cooking, and knowing when to reach for pasteurized products. Let’s walk through what food safety agencies and research actually recommend, keeping in mind your own cooking style and comfort level.

Where Salmonella Hides in Your Eggs

Most people assume Salmonella is a surface problem — something that can be rinsed off the shell. That assumption leads to one of the more counterintuitive food safety rules in the kitchen.

Salmonella can be present inside an egg before the shell even forms. Infected hens can pass the bacteria directly into the yolk and white during laying. Washing the shell does nothing to remove internal bacteria.

In fact, the FDA says never to wash eggs at home, since water can actually pull bacteria through the porous shell. The other contamination route happens after laying when bacteria from feces or nesting material penetrates the shell.

That is exactly why buying clean, uncracked eggs from a refrigerated store is the first line of defense. Bringing them straight home and storing them at a steady 40°F or colder in the main body of the fridge — not the door — slows any bacterial growth significantly.

Why Runny Eggs Raise the Risk

Runny yolks are delicious, and plenty of people eat them without getting sick. That personal experience makes it easy to dismiss the warnings. The disconnect happens because foodborne illness is a numbers game.

The risk of a single egg containing Salmonella is relatively low. But when you are cooking for a crowd, making a large batch of homemade hollandaise, or preparing cookie dough for a party, the odds stack up. A small risk multiplied by dozens of eggs or multiple exposures becomes a meaningful one.

• Sunny-side-up and over-easy: Cooking only one side leaves the yolk liquid. Heat may not reach a high enough internal temperature to kill bacteria throughout the egg.
• Poached eggs with runny yolks: While the white sets up, the yolk often stays below 140°F, the minimum threshold needed to begin killing Salmonella.
• Raw cookie dough and cake batter: A single egg might be fine for most people, but raw flour carries its own bacterial risk. The combination means tasting even a small amount is a real gamble.
• Homemade mayonnaise and hollandaise: These classic emulsions rely on raw egg yolks. Pasteurized eggs are the safer choice, especially for anyone with a weaker immune system or during pregnancy.
• Soft-boiled eggs: A five- or six-minute egg leaves the yolk visibly runny. While the white is fully set, the yolk may not have reached a reliably safe temperature.

Understanding personal tolerance is important, but so is recognizing that some people in your household may be more vulnerable. Young children, older adults, pregnant women, and anyone with a compromised immune system face a higher risk from Salmonella. Serving pasteurized or fully cooked eggs to these groups eliminates the gamble entirely.

Safe Egg Storage Starts at the Store

Egg safety starts before you bring them home. Choosing the right carton and handling it correctly on the way to your refrigerator makes a real difference.

Check the carton for cracks before you buy. Even a hairline fracture can let bacteria inside. Open the carton at the store and look for clean shells without dirt or visible stains.

If an egg is dirty, do not wash it. Water can actually pull bacteria through the porous shell. The FDA and USDA have very clear guidance here: discard cracked or dirty eggs.

Get them home and into the refrigerator within two hours. The FoodSafety.gov egg storage guide emphasizes keeping eggs at a steady 40°F on an inside shelf, not the door, where temperatures fluctuate more.

Pooled eggs need extra care. If you are cracking multiple eggs into a common bowl for a scramble or omelet, cook the mixture immediately. If you need to store it for later, keep it at or below 41°F and always clean and sanitize the container before making a new batch. Bacteria multiply quickly at room temperature in pooled eggs, turning a small risk into a much larger one.

Remember that time and temperature work together. Keeping eggs cold does not kill Salmonella, but it stops it from multiplying, giving you a wider safety window between purchase and cooking.

The table makes it clear: fully cooked eggs are safe eggs. If you prefer runny yolks, using pasteurized eggs brings the risk down significantly while keeping the texture you enjoy.

Cooking Guidelines for Safer Eggs

Thorough cooking remains the most reliable way to kill Salmonella in eggs. The yolk and the white both need to reach a firm texture for the heat to penetrate evenly.

The FDA recommends cooking eggs until the yolk and white are firm. For egg dishes like casseroles or quiches, the internal temperature should reach 160°F. If you don’t have a thermometer, look for visual cues: the eggs should not be runny or slippery.

1. Check your temperature. An instant-read thermometer is the only way to be sure. Insert it into the thickest part of the dish or the center of a casserole.
2. Cook scrambled eggs low and slow. High heat can cook the outside too fast while leaving the inside undercooked. Gentle, consistent heat yields a safer, more tender result.
3. Reheat leftovers to 165°F. If you are reheating a quiche or egg bake, make sure it reaches 165°F throughout to kill any bacteria that may have grown during storage.
4. Opt for pasteurized eggs for raw recipes. If you are making mayonnaise, hollandaise, or eggnog, pasteurized eggs are widely available in the dairy aisle and eliminate the need for a gamble.
5. Serve cooked eggs promptly. Eggs left at room temperature for more than two hours should be discarded. For buffets, keep egg dishes hot using a warming tray.

Pasteurized eggs have been heated in their shells to a temperature high enough to kill Salmonella without actually cooking the egg. This makes them a smart option for any recipe calling for raw or lightly cooked eggs, especially when serving children or older adults.

Pasteurization and Kitchen Hygiene

Pasteurization is one of the most effective tools against Salmonella, and it does not require special equipment at home. Commercially pasteurized eggs are readily available, and research has made the process faster and better than ever.

According to USDA pasteurization research, a newer technique heats the eggs enough to kill Salmonella without ruining the taste, texture, or cooking properties that make eggs so versatile. These pasteurized eggs scramble, fry, and bake just like regular eggs.

Beyond pasteurization, basic kitchen hygiene matters. Wash your hands thoroughly with soap and warm water before and after handling raw eggs. Use separate cutting boards and plates for raw egg prep to avoid cross-contaminating other ingredients.

For the shell itself, remember the cardinal rule: do not wash it. The FDA and USDA are unanimous on this point. Washing eggs at home increases the risk of pulling bacteria through the shell. If an egg is visibly dirty, throw it away.

Sponges and dishcloths should be changed frequently when you are working through a lot of eggs. Salmonella can survive on surfaces, and a quick rinse of a sponge is not enough to kill it. Sanitize counters with a bleach solution after handling raw eggs.

The Bottom Line

Avoiding Salmonella in eggs comes down to three reliable habits: proper refrigeration at 40°F or below, thorough cooking until the yolk and white are firm, and using pasteurized eggs if you prefer runny textures or enjoy raw preparations like mayonnaise or cookie dough. For higher-risk groups — young children, older adults, and pregnant women — pasteurized or fully cooked eggs are the safest choice.

If you regularly cook for someone with a compromised immune system or simply prefer your yolks runny, talking to your local public health agency can help you decide whether pasteurized eggs are the right fit for your kitchen.